package TestDemo7;

import java.util.HashMap;

interface D{
    public void main(String [] args);
    boolean setFlag(Boolean [] test);
    public float get(int x);
}
abstract class A{
    public abstract void say();
    protected abstract void drink();
}

class B extends A{

    @Override
    public void say() {

    }

    @Override
    protected void drink() {

    }

}
class Base{
    public Base(String s){
        System.out.println("B");
    }

    private void say(){
        System.out.println("H");
    }
}
public class Derived extends Base{
    public Derived(String s){
        super(s);
        System.out.println("D");
    }

    public static void main(String[] args) throws Exception {
        HashMap<String,String> hash=new HashMap<>();
        hash.put(null,null);
        hash.put(null,"s");
        System.out.println("ascassac");
    }
}
